Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: Etching note

From: "sailingto" <sailingtoo@...>
Date: 2010-06-13

do I add the
> acid to the H2O2 (water), or the other way around?

ALWAYS add the acid to the H2O2 - MUCH safer.

Ken H>